Data processing system and method for digital television as well as digital television receiving terminal

Abstract

The invention discloses a data processing system and method for a digital television as well as a digital television receiving terminal. The data processing system comprises a middleware module, a CA (conditional access) module as well as an adaptive module and a PMT (program map table) caching module which are arranged between the middleware module and the CA module, wherein the middleware module is used for sending parameters to the adaptive module; the adaptive module is used for acquiring the types of the parameters sent by the middleware module, and constituting a complete PMT in the caching module based on the types of the parameters, and the PMT corresponds to the parameters; and the adaptive module is used for sending the complete PMT to the CA module for descrambling. According to the embodiment of the invention, the coupling between the CA module and the middleware module can be reduced, the workload of developers for maintaining the CA module is lightened, and the implanting efficiency for various middleware can be improved.

Description

technical field [0001] The invention belongs to the technical field of digital television, and in particular relates to a digital television data processing system and method, and a digital television receiving terminal. Background technique [0002] With the vigorous implementation of the national triple play policy, the market demand for set-top box value-added services has brought huge business opportunities for the development of the entire society. At present, the number of middleware companies dedicated to the development of digital TV services also increases, and the forms of middleware are increasingly diversified. A variety of value-added services such as browsers, data broadcasting, stock systems, interactive games, and pure middleware systems covering various applications of digital TV have been widely transplanted and applied in set-top box terminals. [0003] Since the development of middleware has not yet been standardized, unified, and streamlined, the softwa...

AI Technical Summary

Problems solved by technology

Therefore, this method of starting CA descrambling requires a time process, and the more programs and services are included in the frequency point where the middleware is located, the PMT table of these programs and services can be found immediately from these programs The longer the receiving time will be, the longer it will take for the middleware to play the encrypted program and start the CA descrambling process

[0018] (L3) Since the operator may upgrade the front-end at any time, the PMT of each program may be changed and adjusted at any time. When the middleware starts CA descrambling, if the PMT in the program information database is used as the scrambling parameters, the currently broadcasting PMT may be inconsistent with the PMT content stored when the user searches in the historical moment, so that the CA module obtains a PMT that does not match the current encrypted program, causing the descrambling of the CA module to fail

And, in order to alleviate the communication load of the digital TV network, the PMT of many middleware video on demand (Video On Demand, VOD) programs usually only can be transmitted by the front end when the user requests the program. Therefore, when the user searches for programs, many programs on demand The PMT of the corresponding program cannot be obtained, so in the on-demand system, the PMT of the corresponding program cannot be obtained directly through the query method

It can be seen that it is unreliable to obtain the PMT table by querying the program information database to complete the start of CA descrambling

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